Work Machine Posture Recovery via Safe Range Deviation Detection
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Solution Overview
Problem
Work machines may experience posture changes during normal operation that fall within an unfavorable safety range, and existing technologies do not provide a solution for automatic recovery of such postures.
Innovation Solution
A method and system for automatically recovering the posture of a work machine by setting a safe posture range based on its initial state, detecting deviations, and initiating a recovery operation when the machine deviates from this range for a predetermined period, using a combination of detection units and recovery instructions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the work machine operates autonomously without posture recovery control, then productivity is improved, but safety deteriorates due to posture deviations falling into unfavorable ranges
Solution Approach 1:
The system continuously monitors the work machine's posture through detection units and compares it against the safe posture range. When a deviation is detected, the control unit triggers a recovery operation to return the machine to a safe posture, creating a closed-loop feedback system that maintains safety during autonomous operation
Solution Approach 2:
The safe posture range is predetermined based on the work machine's initial posture and operational characteristics. By establishing these safety boundaries before operation begins, the system can proactively prevent unsafe conditions rather than merely reacting to them, allowing autonomous operation within known safe parameters
2Reliability
If posture recovery operation is triggered immediately upon deviation detection, then safety is improved, but productivity deteriorates due to frequent interruptions
Solution Approach 1:
The system dynamically adjusts the response to posture deviations based on the duration and severity of the deviation. Rather than using a fixed immediate-response rule, the control unit evaluates whether the deviation persists beyond an acceptable threshold before triggering recovery, allowing temporary tolerable deviations without interrupting autonomous operation
3Measurement precision
If the safe posture range is set narrowly based on initial posture, then measurement precision is improved, but adaptability deteriorates when environmental factors like earth and sand accumulation occur
Solution Approach 1:
The safe posture range is preliminarily determined based on the work machine's initial posture and expected operational variations. This pre-established range provides clear boundaries for normal operation while the system remains prepared to initiate recovery operations if environmental factors cause the machine to exceed these boundaries
Solution Approach 2:
The posture recovery system automatically detects and corrects deviations caused by environmental factors such as earth and sand accumulation without requiring external intervention. The machine self-corrects its posture by executing recovery operations, adapting to changing environmental conditions autonomously
Data Source
AI summary
A posture recovery apparatus capable of automatically recovering a posture of a work machine is realized. The setting unit (11) sets a safe posture range based on a posture of the work machine before operation. The acquisition unit (12) acquires posture information on the work machine in operation. In a case where, by reference to the posture information, it has been detected that the posture of the work machine in operation has deviated from the safe posture range for a first period, the recovery unit (13) causes the work machine to carry out a recovery operation.